Here is a more detailed paper about problems with the greenhouse gas global warming hypothesis. This paper contains a lot of data that Al Gore doesn't want you to see. Basically, there are no data that support the global warming hypothesis, and as the temperature has gone up weather has improved, more food is grown, and in general things have gotten better for humans. Here is the site for the paper:

http://www.oism.org/pproject/s33p36.htm